Yes. Chlamydia can be passed through oral sex if there is direct contact with infected genital, anal, or oral fluids. This means the infection can move from the genitals to the throat, or from the throat to the genitals, even if there is no ejaculation.
The risk from oral sex is generally lower than from vaginal or anal sex, but it is not zero. Chlamydia can infect the throat, often without causing noticeable symptoms, which makes it possible to spread without knowing it. Because many people do not feel sick, the infection can be passed on unintentionally.
Transmission is more likely when oral sex is unprotected, especially if there are cuts, sores, or irritation in the mouth or throat. Using condoms or dental dams during oral sex lowers the chance of infection but does not fully eliminate it. Regular testing is important for anyone who is sexually active, even when symptoms are absent.
Chlamydia should only be treated with prescription antibiotics taken exactly as directed. Avoid self-medication or delaying care. If there is concern about exposure or symptoms, a primary care provider or sexual health clinic can guide testing and treatment safely.